Artificial limb.



No. 692,360. Patented Feb. 4, 5902;

.1. F. RUWLEY. I

ARTIFICIAL LIWIB.

(Application filed May 20, 1901) i k X (No Model.)

ROlVl'L-lllY, OF CHICAGO, lLlJl-NOIS.

SPECIFIMWION forming; of That-tors .Patent l lo. 692,360, datedjlebruary 4i, 1902.

Application filed May 20, 1501. Serial No. 61,070. (No model) I Be it known that 1, JAMES ROWLEY, a citizenoi the United States of Americmand a resident of Chicago, in the countyof Coot: and State of Illinois, have invented certain new and useful improvements in Artificial Limbs, of which the following is a specification.

Myinvcntion relates particularly to knee joints on artificial legs for use in cases of amputation above the knee.

The main objects of my invention are to attain simplicity, strength, and sl'ahilily,

ready detachment of the parts, and ready adjustment of friction in joints of this class. I accomplish these objects by the construction shown in the accompanying drawing in which- Figure 1 is a perspective view, partly see tional, of an artificial limb embodying invinvention. Fig. i is a section on the line 2 2 of Fig. 3 with the parts in the same position as shown in. Fig. 1. Fig. 3 a. section on the line 3 3 of Fig. :3 with the illlfillSQCliOll turned down to a position dillercnt from that shown in the other views.

The form shown in the drawings consists,

-mainly, of the thigh-section 1 and the legc -,ineans of the bolt 3, block h section 2, which a re pivotally onnecied by r shoe -i, and suitable means for regulating i. 5 pr :sure of said block upon the bolt 3, and thereby controlling the friction between the two sections. has its upper part hollowed out to form the socket 5 and is provided with an arm 6, extending upwardly upon each side, and a post '7, extending upwardly between the arms 6. The post 7 is so, tad in the bracket 8 which is secured unhin the leg section Said post has a socket in its up per end for receiving the bolt 3 and is vortically slidaole in the bracket Scvhen the bolt 23 is removed. The bolt 23 has a head 5) on one end and is threaded at 10 to one of the arms 6. Said bolt is hollow at d squared at ll for receiving a wrench with which to screw same out of the arm U. The plug 12 is threaded into the other end of the bolt 3 and has its head bearing against the other arm U. The plug 12 is likewise hollowed and squared at 13 for receiving a Wrench. The block or cross piece l-l is rigidly secured within the thigh.- section i above the bolt 3 and is provided with a metal plate 15, which is let into the lower surface or" said clock and provided with threaded apertures for receiving the screws or threaded pins 16. The metal plate 15l1as a recess 17 for receiving the llat cxtended base 18 of each screw 10. The block l-l and metal plate 15 provide a threaded seat' for the screw 1 ii. The shoe is loosely seated between the plate 15 and the bolt 3. The shoe --l is recessed at 1910 receive the upper part of the post 7. This recess large enough to prevent the shoe 4 from bearing upon said post. The head 20 of the post 7 is disposed toward the rear, as indicated in Fig. 3,,to permit the thiglrscctiou to be turned down, as shown in Fig. 3, without heinr; interfered with by the shoe t coming in contact with the shank of the post 7. The thiglrscction 1 has a recess 2]. at its roarpart forming-a path for the post 7. At the front part of the recess 21 is a cushion for contact With the post 7.

The operation of the parts shown is as follows-z To permit free relative movement of the leg-sectirm 2 and the thigh-section 1, the operator will turn the screws 16 so as to release the pressure upon the shoe i. This will ease the pressure of said shoe upon the bolt 3. If the jointis too loose, then the operator will turn the screws 16 so as to increase their pressure upon the shoe 4-. This will increase the friction between In connecting the parts the post 7 may be readily adjustoifl in its bracket 3 to the proper position for receiving: the bolt 8. To separate the lcgsection from the thigh-section, the 0p orator will first unscrew the threaded plug 12. He will then remove the bolt 3 by turning same in. its threaded seat- 10.

it will be unijlerstood that numerous details of the construction s howu may be altered without departing from the spirit of my invention. 1 therefore-do not confine myself to such details, except as hereinafter limited in the claims.

That I claim as my invention, and desire to secure by Letters Patent, is

1. In an artificial limb, the combination of two limb sections pivotally connected by a bolt extending transversely of a threaded seat secured to one of said SEC-f said shoe and the bolt said sections tions; a movable shoe interposed between.

said threaded seat and said bolt, and adapted to bear against the bolt; and a threaded pin seated in said threaded seat and acting against the shoe, for regulating the pressure 01. said shoe against the bolt.

2. In an artificial limb, the combination of two limb-sections one of which has a socket in one end and a pair of arms projecting beyond said end'on opposite sides of the socket;

the other section having one end extending into the socket and between said arms, and having an aperture for a bolt extending between said arms; a bolt in said aperture secured to each of said arms and forming the axis for said apertured section; a threaded seat secured to said apertured section; a movable shoe interposed between said threaded seat and said bolt and adapted to bear against the bolt; and a threaded pin seated in said axis for said apertured section; a post projecting upwardly between said arms, secured to the section supporting said arms, and re movably embracing said bolt; a threaded seat secured to said apertured section; a movable shoe interposed between said threaded seat and said bolt, having a recess for the upper part of said post and adapted Iobear against said bolt; and a threaded pin seated in said threaded seat, and acting against the shoe for regulating the pressure of said shoe against said bolt.

at. In an artificial limb, the combination of a leg-section having a socket in its upper end; a pair of arms sccu red to the leg-section and extendingupwardly on opposite sides of the socket; a post secured to the leg-section within the socket and extending upwardly beeeaeeo tween said arms and having a part at its upperend for removablyembraciuga bolt; ahollow thigh-section extending into said socket and having a recess forming a path for said post and a cushion at the front of said recess for abutting the post; a bolt passing through the thigh-section, secured to said arms and embraced by said post a cross-piece secured Within the thigh-section above said bolt and having a threaded aperture; a movable shoe interposed between said cross-piece and said. belt; a threaded pin seated in said threaded aperture and acting upon the -shoe for regulating the pressure of the shoe upon the bolt.

5. In an artificial limb, the combination of a pair of pivotally-connected limb-sections; a pair of arms secured to one of said sections; a bolt passing through the other section and removably secured to said arms; a cross-piece secured to said other section near said bolt; a shoe interposed between said cross-piece and said bolt; and means acting between said cross-pioce and shoe for regulating the pres sure of said shoe upon said bolt.

(3. In an artificial limb, the combination of two pivotally-connected limb-sections; a bolt secured to one of said sections and forming a pivotal bearing for the other section; a block secured to said other section near said belt; a shoe interposed between said block and said bolt; and means acting between said block and said shoe for regulating the pressure of the shoe upon the bolt.

7. In an artificial limb, the con'ibination of a pair 0E pivotally-eonnected limbsections, one of which has a socket therein; a post secured within said socket by a bracket permittingthelongitudinalmovementotthepost in said bracket; and a bolt secured to said post and forming the pivotal axis for said sect-iOnS.

Signed at Chicago this 18th day of May, 1901.

JAM ES 1?. ROWLEY.

Witnesses:

WM. R. RUMMLER, EUGENE A. RUMMLER. 

